WordNet: knuckle, knuckle joint, metacarpophalangeal joint

a joint of a finger when the fist is closed

• hypernym articulatio synovialis, diarthrosis, synovial joint

• part holonym finger

knuckle

• (englanti) knuckle (derivationally related)
• (suomi) rystynen (synonyymi)

knuckle joint

• (suomi) rystynivel (synonyymi)

metacarpophalangeal joint

• (suomi) rystynivel (synonyymi)